<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<script>
    import { createApp } from 'vue'
</script>

<body>

    hello world!
    
    <script>
        createApp({
            data() {
                return {
                    count: 0
                }
            }
        }).mount('#app')
    </script>

    <div id="app">
        <button @click="count++">
            Count is: {{ count }}
        </button>
    </div>

</body>
</html>